Zeb
New member
Rykan at Holders built them in 2014. Have about 60k miles since they were built. Might just pull them and send back to him to go through.
Not noticing any fuel in the coolant. It's nice and red, no oily residue that I can tell.
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It’s true that a cracked head can cause fuel in the oil as 6.0 Tech noted, it just fairly rare, thankfully.
Considering who built the injectors, and the number of miles you’ve put on them, I’ll pretty much guarantee it’s the internal oring that is failing. Sadly, I’ve seen a bunch of Holders injectors do this.